1974 UPU POst Office FDC ,First Day of Issue Philatelic Bureau Edinburgh H/S & Great Britain Day Internaba 1974 Cachet, Internaba Cachet Doubled with Swiss Stamp Basel H/S.

12th June 1974 UPU (Universal Postal Union).Post Office FDC, First Day of Issue Philatelic Bureau Edinburgh H/S & Great Britain Day Internaba 1974 Cachet. What makes this cover scarce is that it has been double dated with a Swiss stamp and Cancelled 4000 Basel Centenarium Internaba 1974 16th June 1974. Also cancelled with INTERNABA 1974 BASEL SCHWEDEN 7.6 - 16.6 Cachet in Blue. Pristine Condition, unsealed, complete with insert card.